Nut and bolt tightening device



J. M. MURRAY.`

NUT AND BOLT TIGHTENING DEVICE.

APPLICATION FILED DEC.26. 1918.

1,332,351. 1 4 Patented Mar.2,1920.

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WITNESS:

J. M. MURRAYI NUT AND BoL TIGHTENING DEVICE.

APPLICATION FILED DEC.26, |918.

Patented Mar. 2, 1920.

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INVENTOR.

WI TNESS:`

ATTORNEY.

JOHN MARSHALL MURRAY, OF PHILADELPHI, PENNSYLVANIA.

NUT AND BOLT TIGHTENING DEVICE.

Application led December 26, 1918.

good leverage room for the manipulation ofA ordinary wrenches. Thus the device of my invention is well adapted for use in tightening the nuts and bolts on the bottoms of ships where there is usually a great number of bolts and the working space between the ship bottom and the ways is extremely limited and usually extends at an incline.

Another object is to so construct the device of my invention that it can be quickly positioned and can be quickly and easily moved from one position to another operative position.

A still further object is to make the device of my invention in such manner that it can be quickly adjusted in height and will be of simple and durable construction.

These objects, land other advantageous ends which will be hereinafter described, I attain in the following manner, reference being had to the accompanying drawings in which- Figure 1 is an elevation, partly in section, showing my improved device in operative position, l

Fig. 2 is a view of certain of the elementsl shown in Fig. 1 and drawn on an enlarged scale,

Fig. 3 is a fragmentary perspective view of the wrench shown in Figs. 1 and 2, and

Figs. 4 and 5 are perspective views showing other forms of wrenches which canbe used with my improved device.

Referring to Figs. 1 to 3, inclusive, of the drawings, 10 represents the bottom plates of a ship having bolts 11 extending therethrough provided with nuts 12 on their undersides, and 13 represents the ways. My improved nut and bolt tightening device is adapted for tightening the nuts 12, as clearly shown in Fig. 1, and consists of a tubular standard 14 which is externally screw threaded at its top, as shown at 15, the

Specification of Letters Patent.

Patented Mar. 2, 1920.

Serial No. 268,329.

threads being preferably at a steep pitch for a. purpose hereinafter described.

The bottom end of the standard 14 is internally screw threaded as shown at 16 to receive the externally screw threaded shank 17 of a pointed metallic shoe 18 which is adapted to dig into or pierce the upper surface of the ways 13.

An adjusting sleeve 19 is internally screw threaded at 20 to receive the external screw threaded portion 15 of the standard 111. The upper end of the adjusting sleeve 19 is externally screw threaded at 21, and a cap 22 is internally screw threaded and adapted to be screwed on the top of the sleeve 19.

A wrench 23 has a depending shank 24: provided with a portion 25 which is angular in cross section. The bottom part of this angular portion 25 fits within an angular hole in the hub 26 of a lever wheel 27. The shank 24 has a cylindrical portion 28 which extends through a hole 29 in the cap 22 and also extends into the sleeve 19. The junction of the cylindrical portion 28 and the angular portion 25 of the shank 241 provides a shoulder 29. This shoulder rests on the top surface of a washer 30 which is interposed between the hub 26 and the cap 22. It will thus be understood that the washer 30 forms a step or thrust bearing for,

however, that the relative rotatable movement between the sleeve 19 and the standard lt will cause the wrench to be raised and lowered according to the direction of rotation. Bv having the screw threads 15 at a steep pitch, the sleeve 19 can be freely turned by being grasped by the hand to cause the wrench to be raised' and lowered.

The form of wrench shown in Figs. 1 to 3 includes a head 31 having two sides 32 which form the members for grasping and turning the nuts 12. A wrench head of this character is particularly well suited where a number of nuts, such for example as illustrated in Fig. 1, are relatively close together, since my improved device, by ernploying a wrench head of the above described character, can be easily moved from one nut to another, the wrench head being open at both ends, as clearly illustrated in Fig. 3.

In Fig. f-I I have shown a Wrench head 33 which is open at one end 34 and closed at its opposite end 35. rI`hisl construction also permits the Wrench to be moved out of eneration can be readily done by turning the sleeve 19 on the standard 14.

While I have described my invention as taking a particular form, it Will be understood that the various parts of my invention may be changed Without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come Within the scope of the appended claims.

Having thus described my invention; What I claim as new and desire to secure by Let ters Patent is:

l. A device of the character described including a screw threaded standard; a sleeve in screw threaded connection with said standard; a cap for said sleeve and having a hole therein; a lever having a portion provided with an angular hole; and a Wrench freely rotatable and having an angular portion fitting said angular hole and having a portion extending through said hole in the cap; substantially as described.

2. A device of the character described including a screw threaded standard; a sleeve in screvv threaded connection with said standard; a cap for said sleeve and having a hole therein; a Washer mounted on said cap and having a hole in alinement with the hole of said cap; a lever having an angular hole; a Wrench having an angular portion fitting said angular hole; and a cylindrical portion extending through the holes in said Washer and cap; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JOHN MARSHALL MURRAY.

In presence ofm CHAs. E. Poms, MARY A. INGLAR. 

